Estimation of relation between effective strain and hardness by rigid-plastic FEM

Choi, Young Seok; Park, J. H.; Kim, B. M.; Choi, Jae‐Hoon; Min, Byeong-Hyeon

doi:10.1007/bf03026353

Cited by 15 publications

(8 citation statements)

References 4 publications

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“…If one seeks a relation between hardness and strain for another material, an upsetting test, hardness measurements, and FE simulations are required followed by correlation with results. Choi et al [6] avoided this burdensome procedure by performing a FE simulation of the Brinell hardness test for a cold formed material. They numerically obtained Brinell hardness of a material that has undergone a certain extent of plastic strain.…”

Section: Introductionmentioning

confidence: 99%

Analytical relations between hardness and strain for cold formed parts

Sonmez

Demir

2007

Journal of Materials Processing Technology

107

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Section: Introductionmentioning

confidence: 99%

Analytical relations between hardness and strain for cold formed parts

Sonmez

Demir

2007

Journal of Materials Processing Technology

107

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“…It is already known that the hardness number of a cold forged product is closely correlated with its effective strain and does not depend upon the forging process [12][13][14]. As it is shown in Fig.…”

Section: Relationship Between Effective Strain and Strengthmentioning

confidence: 84%

“…5, they are the relationships between the effective strain and the hardness for various materials as introduced by Sonmez [13] and Park [14] for low carbon steel and several materials. The relation between the hardness and the effective strain of AlSI 1010 steel from the FE-simulation according to Park [14] is as follows;…”

Section: Relationship Between Effective Strain and Strengthmentioning

confidence: 99%

Durability analysis of an automotive component in consideration of inhomogeneous hardness

Shim

Kim

2011

J Mech Sci Technol

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For the reliability of automotive components, it has to satisfy the dimension accuracy and the strength design requirements for part that has the consistent strength distribution. Since it has the defect due to actual manufacturing process and inhomogeneity of material, the strength design requirement should be not satisfied. In this way, verification of analysis and prediction of fatigue life was very difficult from difference of the failure region. The cold forging products generally has heterogeneity of strength, hardening and fatigue resistance. Therefore, it's important to understand the characteristics of material strength and fatigue of cold forging products considering heterogeneous effect in order to do durability analysis. In this study, in order to propose the method of durability analysis with inhomogeneity of the material, the heterogeneous characteristics are confirmed by predicting the effective strain to perform the plastic deformation simulation influenced from the strength condition and microstructure of pulley at power transmission. Analysis and prediction of effective strain from cold forging is performed by software DEFROM for inhomogeneous characteristics. And the stress of the real operation in performed by MSC.NASTRAN. Also, through correlation about effective strain and hardness, the failure position and the life were estimated to predict the fatigue strength and the external applied stress.

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“…The FEM could be used to study the material deformation process more deeply, and it is an effective means to research the indentation process [ 24 , 25 ] and to establish the relationship between the standard mechanical performance test and hardness. The relationship between hardness and strain [ 26 ], and the relationship between hardness and effective stress [ 27 ] have been developed by FEM. The hardness test and uniaxial compression test are also the measurement methods for resistance to plastic deformation; it is important to relate them together by FEM [ 28 ], and this has been successfully applied under room temperature conditions [ 26 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

FEM Modeling of the Relationship between the High-Temperature Hardness and High-Temperature, Quasi-Static Compression Experiment

et al. 2017

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The high-temperature hardness test has a wide range of applications, but lacks test standards. The purpose of this study is to develop a finite element method (FEM) model of the relationship between the high-temperature hardness and high-temperature, quasi-static compression experiment, which is a mature test technology with test standards. A high-temperature, quasi-static compression test and a high-temperature hardness test were carried out. The relationship between the high-temperature, quasi-static compression test results and the high-temperature hardness test results was built by the development of a high-temperature indentation finite element (FE) simulation. The simulated and experimental results of high-temperature hardness have been compared, verifying the accuracy of the high-temperature indentation FE simulation.The simulated results show that the high temperature hardness basically does not change with the change of load when the pile-up of material during indentation is ignored. The simulated and experimental results show that the decrease in hardness and thermal softening are consistent. The strain and stress of indentation were analyzed from the simulated contour. It was found that the strain increases with the increase of the test temperature, and the stress decreases with the increase of the test temperature.

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Estimation of relation between effective strain and hardness by rigid-plastic FEM

Cited by 15 publications

References 4 publications

Analytical relations between hardness and strain for cold formed parts

Analytical relations between hardness and strain for cold formed parts

Durability analysis of an automotive component in consideration of inhomogeneous hardness

FEM Modeling of the Relationship between the High-Temperature Hardness and High-Temperature, Quasi-Static Compression Experiment

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